Security readout for executives and security teams
Plain-English summary
CVE-2023-20619 is a MediaTek Android vulnerability in the VCU component. A highly privileged local attacker could trigger memory corruption and gain System-level privileges. It does not require user interaction, but it is not remotely exploitable based on the provided CVSS data.
Executive priority
Treat this as a moderate-priority mobile endpoint issue. It is not shown as actively exploited and requires high local privileges, but successful exploitation could give System-level control on affected devices.
Technical view
The issue is improper locking in MediaTek vcu, classified as CWE-667. The CVSS vector is local, low complexity, high privileges required, no user interaction, unchanged scope, with high confidentiality, integrity, and availability impact. MediaTek identifies patch ID ALPS07519159.
Likely exposure
Exposure is most likely on Android 11, 12, or 13 devices using the listed MediaTek chipsets, where the OEM firmware includes the vulnerable vcu component and has not incorporated MediaTek patch ALPS07519159.
Exploitation context
The source bundle does not show CISA KEV listing or public active exploitation evidence. Exploitation requires local access with high privileges, so this is mainly a post-compromise privilege escalation risk.
Researcher notes
Evidence is limited to the CVE record and MediaTek bulletin metadata. The sources identify the component, weakness class, affected chipsets, Android versions, CVSS vector, and patch ID, but do not provide technical root-cause details or standalone mitigation instructions.
Mitigation direction
- Apply OEM Android security updates that include MediaTek patch ALPS07519159.
- Check MediaTek and device-maker bulletins for firmware availability and affected builds.
- Prioritize managed devices using the listed MediaTek chipsets on Android 11 through 13.
- Retire or isolate devices that cannot receive applicable OEM security updates.
Validation and detection
- Inventory Android devices by chipset, OS version, and OEM firmware build.
- Map devices against the listed MediaTek chipsets and Android 11, 12, or 13.
- Confirm whether the OEM firmware includes MediaTek patch ALPS07519159.
- Review mobile device management data for unpatched or unsupported Android builds.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-667: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2023-20619 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H0.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.7MediumVector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://corp.mediatek.com/product-security-bulletin/February-2023CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Locking
Improper Locking represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.